From: Jaime Velasco Juan Date: Tue, 22 Jul 2008 15:28:36 +0000 (-0300) Subject: V4L/DVB (8491): stkwebcam: Always reuse last queued buffer X-Git-Tag: v2.6.27-rc1~31^2~49 X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=b18559076a31ab0be2d980ce2beff8e32504e080;p=linux-2.6-omap-h63xx.git V4L/DVB (8491): stkwebcam: Always reuse last queued buffer This change keeps the video stream going on when the application is slow queuing buffers, instead of spamming dmesg and hanging. Fixes a problem with aMSN reported by Samed Beyribey Signed-off-by: Jaime Velasco Juan Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/video/stk-webcam.c b/drivers/media/video/stk-webcam.c index 8aa56fe0254..a8a72768ca9 100644 --- a/drivers/media/video/stk-webcam.c +++ b/drivers/media/video/stk-webcam.c @@ -445,18 +445,19 @@ static void stk_isoc_handler(struct urb *urb) fb->v4lbuf.bytesused = 0; fill = fb->buffer; } else if (fb->v4lbuf.bytesused == dev->frame_size) { - list_move_tail(dev->sio_avail.next, - &dev->sio_full); - wake_up(&dev->wait_frame); - if (list_empty(&dev->sio_avail)) { - (void) (printk_ratelimit() && - STK_ERROR("No buffer available\n")); - goto resubmit; + if (list_is_singular(&dev->sio_avail)) { + /* Always reuse the last buffer */ + fb->v4lbuf.bytesused = 0; + fill = fb->buffer; + } else { + list_move_tail(dev->sio_avail.next, + &dev->sio_full); + wake_up(&dev->wait_frame); + fb = list_first_entry(&dev->sio_avail, + struct stk_sio_buffer, list); + fb->v4lbuf.bytesused = 0; + fill = fb->buffer; } - fb = list_first_entry(&dev->sio_avail, - struct stk_sio_buffer, list); - fb->v4lbuf.bytesused = 0; - fill = fb->buffer; } } else { framelen -= 4;